title: Organic ultraviolet photodetector based on phosphorescent material.
abstract: A new type of organic visible-blind UV-PDs is demonstrated by utilizing phosphorescent material Ir(III)bis[(4,6-difluorophenyl)-pyridinato-N, C(2)'] picolinate (FIrpic) as the electron donor and [6,6]-phenyl-C-61-butyricacidmethylester (PCBM) as the electron accepter, respectively. The peak responsivity of the organic UV-PDs is as high as 140 mA/W, corresponding to an external quantum efficiency of about 48%, under 365 nm UV light with an intensity of 0.018 mW/cm(2). The distinct photoluminescence quenching of FIrpic is obtained by doping PCBM. The organic UV-PDs provide visible-blind performance with the strong photocurrent response in the UV-A region, the rise and fall times of less than one second, and linear response within the incident light-intensity range from 0.018 to 20 mW/cm(2).
authors.forename: Lingliang
authors.initials: L
authors.lastname: Li
authors.forename: Fujun
authors.initials: F
authors.lastname: Zhang
authors.forename: Qiaoshi
authors.initials: Q
authors.lastname: An
authors.forename: Zixuan
authors.initials: Z
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Aiwei
authors.initials: A
authors.lastname: Tang
authors.forename: Hongshang
authors.initials: H
authors.lastname: Peng
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xu
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Wang